Di- and tri-nuclear molybdenum芒芒芒palladium complexes bearing strong 芒芒-acceptor 芒芒芒P芒芒芒N芒芒芒P芒芒芒 ligands, MeN{P(OR)2}2 (R=CH2CF3 or Ph)
- 作者：Ganesan ; Mani ; Krishnamurthy ; Setharampattu S. ; Nethaji ; Munirathinam
- 刊名：Journal of Organometallic Chemistry
- 出版年：2005
- 期刊代码：64_0022328x
- 类别：ch
- 出版时间：February 14, 2005
- 卷：690
- 期：4
- 页码：1080-1091
- 文件大小：329 K
摘要
The dipalladium complexes, [PdCl(脦脦-MeN{P(OR)2}2)]2 (R=CH2CF3, 1a; Ph, 1b) react with [Mo2(脦脦5-C5H5)2(CO)6] in boiling benzene to afford the molybdenum脦脦脦palladium heterometallic complexes, [(脦脦5-C5H5)(CO)Mo(脦脦-MeN{P(OR)2}2)2PdCl] (R=CH2CF3, 3a; Ph, 3b), [(脦脦5-C5H5)Mo(脦脦3-CO)2(脦脦-MeN{P(OR)2}2)2Pd2Cl], (R=CH2CF3, 5a; Ph, 5b), [(脦脦5-C5H5)(Cl)Mo(脦脦2-CO)(脦脦2-Cl)(脦脦-MeN{P(OR)2}2)PdCl], (R=CH2CF3, 6a; Ph, 6b) and also the mononuclear complex [Mo(CO)Cl(脦脦5-C5H5)(脦脦2-MeN{P(OR)2}2)], (R=Ph, 4b). These complexes have been separated by column chromatography and are characterised by elemental analysis, IR, 1H, 31P{1H} NMR data. The structures of 1a, 3a, 4b, 5b and 6a have been confirmed by single crystal X-ray diffraction. The CO ligands in 5b and 6a adopt a semi-bridging mode of bonding; the Mo脦脦脦CO distances (1.95脦脦脦1.97 脦脦脦) are shorter than the Pd脦脦脦CO distances (2.40脦脦脦2.48 脦脦脦). The Pd脦脦脦Mo distances fall in the range, 2.63脦脦脦2.86 脦脦脦. The reaction of [Mo2(脦脦5-C5H5)2(CO)6] with MeN{P(OPh)2}2 in toluene gives [Mo2(CO)4(脦脦5-C5H5)2(脦脦1-MeN{P(OPh)2}2)2] (2) in which the diphosphazane acts as a monodentate ligand.